package com.tools.hry.xls.analysis.util;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.xssf.eventusermodel.XSSFReader;
import org.apache.poi.xssf.model.SharedStringsTable;
import org.apache.poi.xssf.usermodel.XSSFRichTextString;
import org.xml.sax.Attributes;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.helpers.XMLReaderFactory;

@SuppressWarnings({"rawtypes","unchecked"})
public class SheetHandler extends DefaultHandler {

    private SharedStringsTable sst;
    private String lastContents;
    private boolean nextIsString;

    private int sheetIndex = -1;
    private List<String> rowlist = new ArrayList<String>();
    private int curRow = 0;
    private int curCol = 0;
    private int preCol = 0;
    private int titleRow = 0;
    private int rowsize = 0;

    //保存单个sheet数据
    private static List<List<String>> sheetData = new ArrayList<List<String>>();

    //保存所有sheet数据
    public static Map sheetMap = new HashMap();

    public void optRows(int sheetIndex, int curRow, List<String> rowList) {
        List temp = new ArrayList();
        temp.addAll(rowList);
        sheetData.add(temp);
    }

    public void process() throws Exception {
        String filename = "e://非卡单1-3月.xls";

        OPCPackage pkg = OPCPackage.open(filename);
        XSSFReader r = new XSSFReader(pkg);
        SharedStringsTable sst = r.getSharedStringsTable();

        XMLReader parser = fetchSheetParser(sst);

        Iterator<InputStream> sheets = r.getSheetsData();
        // sheets.hasNext()
        while (sheets.hasNext()) {
            curRow = 0;
            sheetIndex++;
            InputStream sheet = sheets.next();
            InputSource sheetSource = new InputSource(sheet);
            parser.parse(sheetSource);
            sheet.close();

            //添加到map
            System.out.println("表格"+sheetIndex+"数据长度="+sheetData.size());
            sheetMap.put(sheetIndex, sheetData);
            sheetData = new ArrayList();
        }
    }

    public XMLReader fetchSheetParser(SharedStringsTable sst) throws SAXException {
        XMLReader parser = XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
        this.sst = sst;
        parser.setContentHandler(this);
        return parser;
    }

    public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException {
        if (name.equals("c")) {
            String cellType = attributes.getValue("t");
            String rowStr = attributes.getValue("r");
            curCol = this.getRowIndex(rowStr);
            if (cellType != null && cellType.equals("s")) {
                nextIsString = true;
            } else {
                nextIsString = false;
            }
        }

        lastContents = "";
    }

    public void endElement(String uri, String localName, String name) throws SAXException {
        if (nextIsString) {
            try {
                int idx = Integer.parseInt(lastContents);
                lastContents = new XSSFRichTextString(sst.getEntryAt(idx)).toString();
            } catch (Exception e) {
                //e.printStackTrace();
            }
        }

        if (name.equals("v")) {
            String value = lastContents.trim();
            value = value.equals("") ? " " : value;
            int cols = curCol - preCol;
            if (cols > 1) {
                for (int i = 0; i < cols - 1; i++) {
                    rowlist.add(preCol, "");
                }
            }
            preCol = curCol;
            rowlist.add(curCol - 1, value);
        } else {
            if (name.equals("row")) {
                int tmpCols = rowlist.size();
                if (curRow > this.titleRow && tmpCols < this.rowsize) {
                    for (int i = 0; i < this.rowsize - tmpCols; i++) {
                        rowlist.add(rowlist.size(), "");
                    }
                }
                optRows(sheetIndex, curRow, rowlist);
                if (curRow == this.titleRow) {
                    this.rowsize = rowlist.size();
                }
                rowlist.clear();
                curRow++;
                curCol = 0;
                preCol = 0;
            }
        }
    }

    public void characters(char[] ch, int start, int length) throws SAXException {
        lastContents += new String(ch, start, length);
    }

    public int getRowIndex(String rowStr) {
        rowStr = rowStr.replaceAll("[^A-Z]", "");
        byte[] rowAbc = rowStr.getBytes();
        int len = rowAbc.length;
        float num = 0;
        for (int i = 0; i < len; i++) {
            num += (rowAbc[i] - 'A' + 1) * Math.pow(26, len - i - 1);
        }
        return (int) num;
    }

    public int getTitleRow() {
        return titleRow;
    }

    public void setTitleRow(int titleRow) {
        this.titleRow = titleRow;
    }

    public static void main(String[] args) throws Exception{
        SheetHandler p = new SheetHandler();
        p.process();
        System.out.println(p.getRowIndex("1"));
        System.out.println(p.getTitleRow());
    }
}
